Cutter head



B. R. BAND.-

7 CUTTER HEAD.

(Modem 7 'No. 32?;673. Patented Aug-Q 4, 1885.

WITNESSES: IINVENTOR:

I I 7 HM wc,

ATTORNEYS.

1 mm mtw. WM?- 0 c UNITED STATES PATENT OFFICE.

BENJAMIN R. HAND, OF CAMDEN, NE? JERSEY, ASSIGNOR TO HIMSELF AND GEORGE A. MUNGER, OF SAME PLACE.

CUTTER-HEAD.

SPECIFICATION fanning part of Letters Patent No. 323,673, dated August 4, 1885.

Application filed May 11, 1385.

To all whom it may concern.-

Be it known that I, BENJAMIN R. HAND, of Camden, in the county of Camden and State of New Jelsey. have invented a new and Improved Cutter-Head l'or \Vood-Planing Machinery, of which the following is a full, clear, and exact description.

My invention relates to that class of woodplaning machinery in which the knives are held by a revolving head which operates in I connection with the mechanism for moving the material to be planed.

The object of my invention is to provide a cutter-head which will securely and firmly hold the knives against; displacement after their adjustment thereto.

The invention consists in the peculiar construction and arrangement of parts, as here inai'tcr fully described, and pointed out. in the claim.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letteis of reference indicate corresponding parts in all the figures.

Figure 1 is an end view of the cutter-head, parts being shown in section. Fig. 2 is a side elevation of the same. Fig. 3 is a perspective view of one of the clampingcaps. Fig. 4 is a perspective view of one of the knives.

In the drawings, A represents the cutterhead, which is of an approximately reetangular shape, and is adapted to be secured to the shaft with which it revolves. Or the faces of this head the mbbets a a, of unequal depth, are formed, leaving a shoulder, B, on the back of cutter-head A, and just back of this shoulder B are the clearing-grooves C.

The cutting-knives D, which are made of thin strips of tempered steel having a beveled sharpened edge, are placed in the rabbet a so as to project beyond the faces of the cutter-head A, and over the clearing-grooves G.

(Modehl The knives D have no bolt-holes or slots to weaken them, but are held to the head by means of the steel clamping-caps E. The caps E also have dowel-pins b, which fit in corresponding holes in the shoulder B, thereby holding the caps E loosely on the cutterhead to allow the knives D to be adjusted before screwing down the caps E by means of the belts or screws 0, which are countersunk in the said cap E and pass into the head A. The caps E are of .1 length to correspond with that of the knives l), and of a width to have contactwith the full width of the knives D, and also to extend back of the rabbets a. a and rest on the shoulder B.

Thus it will be seen that by having the rabbets a a the caps E have no contact with the head A between the shoulder Band knives D, and the full pressure of the screws or bolts is made to act on the knives D.

The caps E extending over the edges ofthe cutter-head A serve to re-enforce and strengthen the edges of the cutting-knives D.

3y the use of my improved cutter-head bolts and slots through the cutting-knives are dispensed with, and eonsequentl y the strength of these knives is not impaired. My invention also permits of the use of much thinner knives than are generally used on cutter-heads. I Having thus described my improvement, I claim as new and desire to secure by Letters Patent- As an improved article of manufacture, a cu'tter'head consisting of the cutter-head A, having the rabbets a a, the shoulders B, and

the removable caps E, provided with the dowel-pins b, the said caps projecting over the edge of the cutter-head, as set forth.

BENJAMIN R. HAND.

Vitnesses:

Jens F. SHAW, Jr., \VATSON DEPUY. 

